# US 12,222,473 B2 · Low total track length lens assembly including seven lenses of +−+−++− refractive powers for large sensor format

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,222,473 B2
- Document ID: US12222473B2
- Status: Granted
- Kind: B2
- Application number: 18/645,450
- Filed: 2024-04-25
- Published: 2024-10-03
- Granted: 2025-02-11
- Earliest claimed: 2019-08-21
- Assignees: Corephotonics Ltd.
- Applicants: Corephotonics Ltd.
- Inventors: Roy Rudnick; Michael Dror; Ephraim Goldenberg
- Web page: https://patentgrep.com/patent/US12222473B2

## CPC

- G02B 13/0045: {having five or more lenses}
- G02B 9/64: having more than six components
- G02B 13/02: Telephoto objectives, i.e. systems of the type + - in which the distance from the front vertex to the image plane is less than the equivalent focal length
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

Lens assemblies comprising from an object side to an image side, seven lens elements numbered L1-L7; an optical window; and an image sensor having a sensor diagonal length (SDL), wherein an exemplary lens assembly has a total track length TTL that includes the optical window an effective focal length EFL and a field of view (FOV), wherein TTL/EFL<1.100, wherein TTL/SDL<0.64, wherein FOV<90 degrees, wherein a normalized thickness standard deviation constant T_STD of at least four of the seven lens elements complies with T_STD<0.035, and wherein a focal length f1 of lens element L1 fulfills f1/EFL<0.95.

## Claims

### Claim 1

A lens assembly comprising: from an object side to an image side, seven lens elements numbered L1-L7;
an optical window; and
an image sensor having a sensor diagonal length SDL,
wherein the lens assembly has a total track length TTL, an effective focal length EFL, a field of view FOV<90 degrees and a f number f/#<1.8, wherein TTL/EFL<1.100, wherein TTL/SDL<0.64, wherein a focal length f1 of lens element L1 fulfills f1<EFL, wherein the lens element L1 is convex on the object side, wherein each lens element has a clear aperture CA, and wherein the CA of lens elements L3 or L4 is the smallest of all CAs in the lens assembly.

### Claim 2 (depends on 1)

The lens assembly of claim 1, wherein a power sign sequence of the seven lens elements numbered L1-L7 is +−+−++−.

### Claim 3 (depends on 1)

The lens assembly of claim 1, wherein TTL/EFL<1.090.

### Claim 4 (depends on 1)

The lens assembly of claim 1, wherein TTL/EFL<1.083.

### Claim 5 (depends on 1)

The lens assembly of claim 1, wherein TTL/SDL<0.63.

### Claim 6 (depends on 1)

The lens assembly of claim 1, wherein TTL/SDL<0.61.

### Claim 7 (depends on 1)

The lens assembly of claim 1, wherein each lens element has a respective central thickness CT, and wherein the CT of at least 6 of the 7 lens elements complies CT/TTL<0.07.

### Claim 8 (depends on 1)

The lens assembly of claim 1, wherein f1/EFL<0.9.

### Claim 9 (depends on 1)

The lens assembly of claim 1, wherein f1/EFL<0.85.

### Claim 10 (depends on 1)

The lens assembly of claim 1, wherein a focal length f5 of lens element L5 fulfills |f5/EFL|>4.0.

### Claim 11 (depends on 1)

The lens assembly of claim 1, wherein a focal length f5 of lens element L5 fulfills |f5/EFL|>6.0.

### Claim 12 (depends on 1)

The lens assembly of claim 1, wherein a focal length f5 of lens element L5 fulfills |f5/EFL|>8.0.

### Claim 13 (depends on 1)

The lens assembly of claim 1, wherein a focal length f6 of lens element L6 fulfills f6/EFL|>15.0.

### Claim 14 (depends on 1)

The lens assembly of claim 1, wherein a focal length f6 of lens element L6 fulfills f6/EFL|>30.0.

### Claim 15 (depends on 1)

The lens assembly of claim 1, wherein a focal length f6 of lens element L6 fulfills f6/EFL|>45.0.

### Claim 16 (depends on 1)

The lens assembly of claim 1, wherein SDL=12 mm and wherein FOV<85 degrees.

### Claim 17 (depends on 1)

The lens assembly of claim 1, wherein SDL=12 mm and wherein FOV<83 degrees.

### Claim 18 (depends on 1)

The lens assembly of claim 1, wherein the lens assembly is included in a smartphone.